Shear transfer across new and existing concrete interfaces

Bass, Robert A.; Carrasquillo, R L; Jirsa, James O.

doi:10.14359/2906

Cited by 10 publications

(1 citation statement)

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“…Flexural continuity is achieved by continuing the reinforcement through the joint, while shear transfer is provided by shear friction between old and new concrete, or dowel action in reinforcement through the joint [2]. Construction joints may result in less than 100% of shear capacity and should be made in the following manner [1,3 ] [4] studied the shear transfer across new and existing concrete interfaces by carrying out an experimental program, to provide information on the interface shear capacities between new concrete cast against an existing concrete surface. They concluded that an increase in the amount of reinforcement crossing the interface resulted in higher shear capacities at large slip levels.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Transverse Construction Joints of Reinforced Concrete Beams

Abdul-Majeed

2010

ETJ

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Construction joints are stopping places in the process of placing concrete, and they are required because in many structures it is impractical to place concrete in one continuous operation. The amount of concrete that can be placed at one time is governed by batching and mixing capacity and by the strength of the formwork. A good construction joint should provide adequate flexural and shear continuity through the interface.In this study, available experimental tests were analyzed by using a nonlinear three-dimensional finite element ANSYS computer program (v. 9). In addition an interface model was proposed for the transverse construction joints.Six beams with different transverse construction joints at mid-span as well as to one reference beam without joint are analyzed. The reliability of the model is demonstrated by comparison with the experiment and alternative numerical analysis which shows 5-7% difference.

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Section: Introductionmentioning

confidence: 99%